Microscale Hirsch filter funnel with a 10mm O.D. fritted disc for microscale applications with 14/10 joints. ● Material:Borosilicate glass ● Color:Clear ● Durability,corrosion and heat resistance ● Porosity Coarse(G2) whose disc diameter is 10-15μm,is used for filtering coarse precipitate and gas washing ● Porosity Medium(G3) whose disc diameter is 4.5-9μm,is used for filtering fine precipitation or mercury